158188158 has 48 divisors (see below), whose sum is σ = 361086336. Its totient is φ = 49951440.

The previous prime is 158188097. The next prime is 158188169. The reversal of 158188158 is 851881851.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42513 + ... + 46083.

It is an arithmetic number, because the mean of its divisors is an integer number (7522632).

Almost surely, 2^158188158 is an apocalyptic number.

158188158 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 158188158, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180543168).

158188158 is an abundant number, since it is smaller than the sum of its proper divisors (202898178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

158188158 is a wasteful number, since it uses less digits than its factorization.

158188158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3709 (or 3706 counting only the distinct ones).

The product of its digits is 102400, while the sum is 45.

The square root of 158188158 is about 12577.2873863962. The cubic root of 158188158 is about 540.8265326045.

The spelling of 158188158 in words is "one hundred fifty-eight million, one hundred eighty-eight thousand, one hundred fifty-eight".